fighting into the city. the state of the art building will provide space for firearms testing and a new morgue, among other things. there will be room for testing for the flu and other epidemics and also analysis for possible terrorist attacks. the lab is in southwest d.c., not far from the national mall. >>> neighbors and friends are mourning the loss of a local professor hit and killed while walking his dog in d. krflt today. a car struck rhett leverett near 6th and e streets northwest this morning. leverett was a much-loved history professor at marymount. police say the driver who hit him had some kind of medical emergency, and lost control. >>> occupy d.c. protesters are back in town. they say they'll be here most of the week to mark the one-year anniversary of their movement. today there were scuffles with police, a few of them anyhow, aras the protesters marched along k street. >> reporter: they chanted slogans bringing back memories of last year's occupy d.c. their goal? shut down k street. demonstrat